Your main problem seems to be that with what litle information you are willing or allowed to provide, advising you how to solve the problem results in lucky guessing.
As others stated: you have two options here: Using AIR which has the disadvantage that the user has to install the Adobe Integrated runtime (besides Flash) or going the ExternalInterface-route, which will load your canvas games in a Lightboxy kind of thing outside of your main app.
For the AIR solution look here: Adobe Flash Platform * About the HTML environment